NEW YORK – A gravure is the product of the process of printing from an intaglio plate; photogravure is a form of photoengraving, relying on plates or cylinders to reproduce the image. A June 15 Jasper52 sale of Vintage Gravures, which begins at 4 pm Eastern time, offers 150 lots of images by great photographers. Absentee and Internet live bidding will be available through LiveAuctioneers.